Just a couple more meta tags that you can slip in with Ben's:
<meta http-equiv="Expires" content="Fri, Jun 12 1981 08:20:00 GMT">
<meta http-equiv="Cache-Control" content="no-cache">
There's no harm in using all three together - you should pop them all inside
the <head> section of the web page, e.g.:
<html>
<head>
<meta http-equiv="Expires" content="Fri, Jun 12 1981 08:20:00 GMT">
<meta http-equiv="Cache-Control" content="no-cache">
<meta http-equiv="Pragma" content="no-cache">
<title>a non-cached page</title>
</head>
Another web developer's trick is to reference a file/page that you don't
want caching by appending an ever changing (or random) value to the link,
e.g.:
<a href="http://www.myserver.com/files/document.pdf?89437897">PDF
file</a>
What you need to achieve is for that "89437897" to be different each time
the page containing the link is loaded. This can be achieved via JavaScript
for static HTML pages, or by appending a random number (or maybe current
epoch seconds) if the page is generated via CGI/PHP/JSP etc. This works
because both the web server and the web browser are fooled into thinking
that "document.pdf?1234" and "document.pdf?4321" are totally different
files, even though they are exactly the same files. Make sure that you
remember to add that "?" after the file name tho!
regards
Dave Pattern
INHALE Project
> -----Original Message-----
> From: ben hyde [mailto:[log in to unmask]]
> Sent: 20 December 2002 11:40
> To: [log in to unmask]
> Subject: Re: PDF Forms
>
>
> you can set web pages to no-cache - but I am not sure you can
> overide Bb to
> do this - you could present the pdf in your own web page and then add:
>
> <meta http-equiv="Pragma" content="no-cache;>
>
> which *might* fix it
>
> ben
>
> "Jagger, Daniel" wrote:
>
> > Dear Blackboarders,We are trying to get the hang of
> interactive forms in
> > PDF. Basically an assignment sheet is filled in on-line and then
> > saved/printed out to the students pc/printer. The problems
> we are having
> > is that when you change the PDF Form (type in the text boxes) in
> > blackboard whether you save the form or not, the content
> you type in, is
> > still there when you re-load the same document on the same machine.
> > Reloading the same file on a different machine reveals an original
> > (unchanged) form but again if you change it and then try
> re-load it on
> > the same machine the content typed on that machine
> appears!!!Seems like
> > some form of temporary cache to me, if anyone knows a way
> around it I'd
> > be very grateful. Or if anyone knows how to create some
> kind of "Onload
> > reset form" function that i can apply to the pdf form again I'd
> > appreciate it.Thanks in advance,Daniel JaggerOnline
> TechnicianMyerscough
> > CollegePreston Lancs
> >
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